--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.sctp/share/classes/com/sun/nio/sctp/AbstractNotificationHandler.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,140 @@
+/*
+ * Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.sun.nio.sctp;
+
+/**
+ * A skeletal handler that consumes notifications and continues.
+ *
+ * <P> This class trivially implements the {@code handleNotification} methods to
+ * return {@link HandlerResult#CONTINUE CONTINUE} so that all notifications are
+ * consumed and the channel continues to try and receive a message.
+ *
+ * <P> It also provides overloaded versions of the {@code handleNotification}
+ * methods, one for each of the required supported notification types, {@link
+ * AssociationChangeNotification}, {@link PeerAddressChangeNotification},
+ * {@link SendFailedNotification}, and {@link ShutdownNotification}. The
+ * appropriate method will be invoked when the notification is received.
+ *
+ * @since 1.7
+ */
+public class AbstractNotificationHandler<T>
+    implements NotificationHandler<T>
+{
+    /**
+     * Initializes a new instance of this class.
+     */
+    protected AbstractNotificationHandler() {}
+
+    /**
+     * Invoked when an implementation specific notification is received from the
+     * SCTP stack.
+     *
+     * @param  notification
+     *         The notification
+     *
+     * @param  attachment
+     *         The object attached to the {@code receive} operation when it was
+     *         initiated.
+     *
+     * @return  The handler result
+     */
+    @Override
+    public HandlerResult handleNotification(Notification notification,
+                                            T attachment) {
+        return HandlerResult.CONTINUE;
+    }
+
+    /**
+     * Invoked when an {@link AssociationChangeNotification} is received from
+     * the SCTP stack.
+     *
+     * @param  notification
+     *         The notification
+     *
+     * @param  attachment
+     *         The object attached to the {@code receive} operation when it was
+     *         initiated.
+     *
+     * @return  The handler result
+     */
+    public HandlerResult handleNotification(AssociationChangeNotification notification,
+                                            T attachment) {
+        return HandlerResult.CONTINUE;
+    }
+
+    /**
+     * Invoked when an {@link PeerAddressChangeNotification} is received from
+     * the SCTP stack.
+     *
+     * @param  notification
+     *         The notification
+     *
+     * @param  attachment
+     *         The object attached to the {@code receive} operation when it was
+     *         initiated.
+     *
+     * @return  The handler result
+     */
+    public HandlerResult handleNotification(PeerAddressChangeNotification notification,
+                                            T attachment) {
+        return HandlerResult.CONTINUE;
+    }
+
+    /**
+     * Invoked when an {@link SendFailedNotification} is received from
+     * the SCTP stack.
+     *
+     * @param  notification
+     *         The notification
+     *
+     * @param  attachment
+     *         The object attached to the {@code receive} operation when it was
+     *         initiated.
+     *
+     * @return  The handler result
+     */
+    public HandlerResult handleNotification(SendFailedNotification notification,
+                                            T attachment) {
+        return HandlerResult.CONTINUE;
+    }
+
+    /**
+     * Invoked when an {@link ShutdownNotification} is received from
+     * the SCTP stack.
+     *
+     * @param  notification
+     *         The notification
+     *
+     * @param  attachment
+     *         The object attached to the {@code receive} operation when it was
+     *         initiated.
+     *
+     * @return  The handler result
+     */
+    public HandlerResult handleNotification(ShutdownNotification notification,
+                                            T attachment) {
+        return HandlerResult.CONTINUE;
+    }
+}